Windows 10 was free for almost a year. It was during that period, Microsoft did nag people to upgrade to the new OS. Still there are lots of people looking to get Windows 10 for free even though it is now a paid product.
There are ways to legalize Windows in order to get it without having to pay. But still there are methods to upgrade and below are some methods that you could try.
You need to know that even though all methods did work after deadline has passed and sometimes it may not work for you now while you are reading through this. Microsoft has started on clamping ways to get OS for free. So why wait, grab it.
The easiest and the first method to get free Windows 10 upgrade is by using assistive technologies method that is explained here. Microsoft does close all the gaps in the coming weeks as it could allow users with accessibility needs to continue with the upgradation process for free. It does not allow for any deadline to be missed without making any payment.
The other method is by using Windows 7 or Windows 8.1 key. According to Mary Jo Foley, watcher for Microsoft, any valid user of Windows 7 or Windows 8.1 could install Windows 10 for at least time being. According to reports of Mary Jo Foley, users can start and get Windows 10 activated on systems where Windows 10 older versions is installed by using the product keys of Windows 7 or Windows 8.1.
But this method cannot run for long but it is worth giving a try if Windows 7 or Windows 8.1 retail product key is used. And if it works, you could get free installation for cleaning on your system in the future. Also digital entitlement on PC could be available too.